title: Amplified spontaneous emission in conjugated polyrotaxanes under quasi-CW pumping.
abstract: Amplified spontaneous emission under millisecond pulsed excitation on a rotaxane-insulated conjugated polymer is reported. Pump-probe spectroscopy confirms the absence of polaron-pair absorption in the gain spectral region as the main factor contributing to quasi-steady-state amplified spontaneous emission. The low polaron-pair yield in this compound is the likely result of effective backbone encapsulation provided by the threading ring.
authors.affiliation: Instituto Madrileño de Estudios Avanzados, (IMDEA-Nanociencia), Cantoblanco, Madrid 28049, Spain. marta.mroz@imdea.org
authors.forename: Marta M
authors.initials: MM
authors.lastname: Mróz
authors.forename: Giuseppe
authors.initials: G
authors.lastname: Sforazzini
authors.forename: Yongchun
authors.initials: Y
authors.lastname: Zhong
authors.forename: Kam Sing
authors.initials: KS
authors.lastname: Wong
authors.forename: Harry L
authors.initials: HL
authors.lastname: Anderson
authors.forename: Guglielmo
authors.initials: G
authors.lastname: Lanzani
authors.forename: Juan
authors.initials: J
authors.lastname: Cabanillas-Gonzalez
keywords: lasing; optoelectronics; quasi-cw pumping; rotaxanes